Abstract: A support for high-voltage or medium-voltage electrical plant comprises four columns placed on a support surface and connected in pairs by crossmember assemblies. The columns are each articulated to rotate about a first horizontal axis at their end resting on the support surface and about a second horizontal axis on a top crossmember at their other end. The first and second axes are parallel. Two opposite crossmember assemblies allow the two columns connected by one or the other of these two assemblies to move in a stable manner in their rotation plane.

Abstract: This invention provides a speed sensitive device for controlling the speed of an engine. A tachometric generator is provided which supplies a voltage or a function of the engine speed, and this is compared with a reference voltage which is a fraction of the voltage of the battery.In a first stage of the comparison the voltage supplied by the tachometric generator is compared with a reference voltage fixed by a dividing bridge, which determines a comparison threshold so that, when the voltage supplied by the tachometric generator exceeds this threshold, the first stage triggers a second stage of comparison, similar to the first, which compares the voltage from the first stage with another reference voltage fixed by a second dividing bridge, this second triggering causing actuation of a switching component to modify the ignition of the engine.

Abstract: An ignition device for an internal combustion engine of the kind having an ignition coil comprising a primary winding and a secondary winding, a current limiting resistance connected in series with the primary winding and a contact breaker, wherein there is provided means which shunt said current limiting resistance for a predetermined time at each closure of the contacts of said contact breaker.